Recently the board software has been updated and there are some known bugs/failures:
- Avatars are currently not being displayed✔ FIXED
- Tapatalk connection is currently broken✔ FIXED
- Avatars cannot be uploaded✔ FIXED

The control circuitry in the 9070 is totally different from the 7970. You cannot hope to replicate the simple hacks done on the 7970. Unless you have some pretty sophisticated electronic engineering background to dupe the 9070 controllers.

And as said, get the R610 sprint buttons and hack from there. A whole lot less painful.

AFAIK the sprint shifters use a dedicated port in the ST-9070 as the SW-9070 climber shifters. This port is absent in the ST-9071. Furthermore the wiring is not long enough to fit through the complete base bar.So you have to cannibalize the brifters or SW-R671, put them in the basebar and solder some sort of buttons to the circuit board. Then you glue these buttons to the Magura brakes.

Gotcha. I'd think about using a five port junction and splicing a longer wire, if that's a doable solution.

Edit, never mind, guess not. The "dedicated" port part probably means that the chip is in the brifter, not in the sprint buttons, which also explains why you can use the climbing shifters with Ultegra but not the sprint buttons (at least 6770, not clear about 6870).

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